﻿class Solution {
    public List<List<String>> groupAnagrams(String[] strs) {
Map<String,List<String>> map=new HashMap<String,List<String>>();
for(String str:strs){
    char[] array=str.toCharArray();
    Arrays.sort(array);
String key=new String(array);
List<String> list=map.getOrDefault(key,new ArrayList<String>());
list.add(str);
map.put(key,list);

}
return new ArrayList<List<String>>(map.values());
    }
}